CVE-2021-20153

{"id": "CVE-2021-20153", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 6.9, "accessVector": "LOCAL", "vectorString": "AV:L/AC:M/Au:N/C:C/I:C/A:C", "authentication": "NONE", "integrityImpact": "COMPLETE", "accessComplexity": "MEDIUM", "availabilityImpact": "COMPLETE", "confidentialityImpact": "COMPLETE"}, "acInsufInfo": false, "impactScore": 10.0, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 3.4, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.8, "attackVector": "PHYSICAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 0.9}]}, "published": "2021-12-30T22:15:08.753", "references": [{"url": "https://www.tenable.com/security/research/tra-2021-54", "tags": ["Third Party Advisory"], "source": "vulnreport@tenable.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-59"}]}], "descriptions": [{"lang": "en", "value": "Trendnet AC2600 TEW-827DRU version 2.08B01 contains a symlink vulnerability in the bittorrent functionality. If enabled, the bittorrent functionality is vulnerable to a symlink attack that could lead to remote code execution on the device. If an end user inserts a flash drive with a malicious symlink on it that the bittorrent client can write downloads to, then a user is able to download arbitrary files to any desired location on the devices filesystem, which could lead to remote code execution. Example directories vulnerable to this include \"config\", \"downloads\", and \"torrents\", though it should be noted that \"downloads\" is the only vector that allows for arbitrary files to be downloaded to arbitrary locations."}, {"lang": "es", "value": "Trendnet AC2600 TEW-827DRU versi\u00f3n 2.08B01, contiene una vulnerabilidad de symlink en la funcionalidad bittorrent. Si est\u00e1 habilitada, la funcionalidad de bittorrent es vulnerable a un ataque de enlace simb\u00f3lico que podr\u00eda conllevar a una ejecuci\u00f3n de c\u00f3digo remota en el dispositivo. Si un usuario final inserta una unidad flash con un enlace simb\u00f3lico malicioso en el que el cliente bittorrent puede escribir descargas, entonces un usuario es capaz de descargar archivos arbitrarios en cualquier ubicaci\u00f3n deseada en el sistema de archivos del dispositivo, lo que podr\u00eda conllevar a una ejecuci\u00f3n de c\u00f3digo remota. Ejemplos de directorios vulnerables a esto incluyen \"config\", \"downloads\", y \"torrents\", aunque debe notarse que \"downloads\" es el \u00fanico vector que permite la descarga de archivos arbitrarios a ubicaciones arbitrarias.\n"}], "lastModified": "2022-01-07T16:27:36.187", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:trendnet:tew-827dru_firmware:2.08b01:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "9C008C1E-18D3-4A0C-97A1-89009310C55B"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:trendnet:tew-827dru:2.0:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "FA6A79A7-46A7-446F-B512-4C75B5C214CE"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "vulnreport@tenable.com"}